Detection of Trichinella murrelli in coyotes (Canis latrans) from Oklahoma and North Texas

We determined the prevalence and mean intensity of Trichinella sp. infection in coyotes from six counties in Oklahoma and one in northern Texas. Tongues from 77 coyotes were examined using histology and artificial tissue digestion. Histological examination showed a prevalence of 3.9% (3 of 77) where...

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Bibliographic Details
Published in:Veterinary parasitology 2011-12, Vol.182 (2-4), p.368-371
Main Authors: Reichard, Mason V., Tiernan, Kathryn E., Paras, Kelsey L., Interisano, Maria, Reiskind, Michael H., Panciera, Roger J., Pozio, Edoardo
Format: Article
Language:English
Subjects:
Animals
Canis latrans
Coyote
Coyotes
Oklahoma
Oklahoma - epidemiology
Prevalence
Texas
Texas - epidemiology
Trichinella - classification
Trichinella murrelli
Trichinellosis - epidemiology
Trichinellosis - veterinary
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Summary:We determined the prevalence and mean intensity of Trichinella sp. infection in coyotes from six counties in Oklahoma and one in northern Texas. Tongues from 77 coyotes were examined using histology and artificial tissue digestion. Histological examination showed a prevalence of 3.9% (3 of 77) whereas the prevalence was 6.5% (5 of 77) based on artificial digestion of 5.0g of muscle from coyote tongues. One sample was positive for Trichinella sp. on histology but negative by artificial digestion. Combining data from both diagnostic techniques showed that six of 77 (7.8%) coyotes were infected with Trichinella spp. The mean intensity of Trichinella sp. larvae ranged from 0.2 to 66.2 with an average of 16.0 larvae per gram (LPG) of tongue. Genotyping results demonstrated that the coyotes were infected with Trichinella murrelli. This is the first report of T. murrelli infection in coyotes in Oklahoma. T. murrelli had previously been isolated from coyotes in Texas.
ISSN:0304-4017
1873-2550
DOI:10.1016/j.vetpar.2011.06.001